If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

Can you spot the hidden girl in the picture below?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

Can you solve below mathematical equation?

2^1234 - 2^1233